Finding the Fourth Proportional to 5,129,232.12, 7,078,345.38 and 2,837,547.72
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Solution
The fourth proportional to 5,129,232.12, 7,078,345.38 and 2,837,547.72 is: 3,915,818.65
Step by Step Solution
- Step 1: Write the proportion equation
5,129,232.12 : 7,078,345.38 = 2,837,547.72 : x - Step 2: Convert to fraction form
5,129,232.12/7,078,345.38 = 2,837,547.72/x - Step 3: Cross multiply
5,129,232.12x = 7,078,345.38 × 2,837,547.72 - Step 4: Simplify right side
5,129,232.12x = 20,085,142,794,391.54 - Step 5: Solve for x
x = 20,085,142,794,391.54/5,129,232.12 - Step 6: Final answer
x = 3,915,818.65
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.